package com.leo.boot.mail.service;

import java.io.File;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;

import lombok.extern.slf4j.Slf4j;

@Slf4j
@Service
public class MailSendService {
	
    @Autowired
    private JavaMailSender mailSender;

    @Value("${spring.mail.username}")
	private String from;
	
    /**
     * 发送简单邮件
     */
	public void sendSimpleMail(String to, String subject, String content) {
	    SimpleMailMessage message = new SimpleMailMessage();
	    message.setFrom(from);
	    message.setTo(to);
	    message.setSubject(subject);
	    message.setText(content);
	
	    try {
	        mailSender.send(message);
	        log.info("简单邮件已经发送。");
	    } catch (Exception e) {
	        log.error("发送简单邮件时发生异常！", e);
	    }
	}
	
	/**
	 * 发送带附件的邮件
	 */
	public void sendAttachmentsMail(String to, String subject, String content, String filePath){
	    MimeMessage message = mailSender.createMimeMessage();

	    try {
	        MimeMessageHelper helper = new MimeMessageHelper(message, true);
	        helper.setFrom(from);
	        helper.setTo(to);
	        helper.setSubject(subject);
	        helper.setText(content, true);

	        FileSystemResource file = new FileSystemResource(new File(filePath));
	        String fileName = filePath.substring(filePath.lastIndexOf("."));
	        helper.addAttachment(fileName, file);

	        mailSender.send(message);
	        log.info("带附件的邮件已经发送。");
	    } catch (MessagingException e) {
	        log.error("发送带附件的邮件时发生异常！", e);
	    }
	}
	
	/**
	 * 发送带静态资源的邮件
	 */
	public void sendInlineResourceMail(String to, String subject, String content, String rscPath, String rscId){
	    MimeMessage message = mailSender.createMimeMessage();

	    try {
	        MimeMessageHelper helper = new MimeMessageHelper(message, true);
	        helper.setFrom(from);
	        helper.setTo(to);
	        helper.setSubject(subject);
	        helper.setText(content, true);

	        FileSystemResource res = new FileSystemResource(new File(rscPath));
	        helper.addInline(rscId, res);

	        mailSender.send(message);
	        log.info("嵌入静态资源的邮件已经发送。");
	    } catch (MessagingException e) {
	        log.error("发送嵌入静态资源的邮件时发生异常！", e);
	    }
	}
	
	public void sendHtmlMail(String to, String subject, String content){
		MimeMessage message = mailSender.createMimeMessage();
 
		try {
			//true表示需要创建一个multipart message
			MimeMessageHelper helper = new MimeMessageHelper(message, true);
			helper.setFrom(from);
			helper.setTo(to);
			helper.setSubject(subject);
			helper.setText(content, true);
 
			mailSender.send(message);
			log.info("html邮件已经发送。");
		} catch (MessagingException e) {
			log.error("发送html邮件时发生异常！", e);
		}
	}

}
